It can make you sad to look at pictures from your youth. So there's a trick to it. The trick is not to look at the later pictures.

Summary

This quote suggests that revisiting past memories or looking at pictures from one's youth can evoke feelings of sadness. However, it advises a trick to prevent this sadness. The trick involves avoiding or not dwelling on pictures from one's later years, as they may remind a person of the passing of time and the changes that come with it. By controlling what pictures they choose to view, individuals can potentially preserve a sense of happiness and avoid any melancholic reflections on the passage of time.